125315651 has 2 divisors, whose sum is σ = 125315652. Its totient is φ = 125315650.

The previous prime is 125315647. The next prime is 125315683. The reversal of 125315651 is 156513521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125315651 - 2² = 125315647 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (125315611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62657825 + 62657826.

It is an arithmetic number, because the mean of its divisors is an integer number (62657826).

Almost surely, 2^125315651 is an apocalyptic number.

125315651 is a deficient number, since it is larger than the sum of its proper divisors (1).

125315651 is an equidigital number, since it uses as much as digits as its factorization.

125315651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4500, while the sum is 29.

The square root of 125315651 is about 11194.4473289216. The cubic root of 125315651 is about 500.4205142364.

The spelling of 125315651 in words is "one hundred twenty-five million, three hundred fifteen thousand, six hundred fifty-one".